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Spindle self-organization

Stages

Prophase

Chromosomes condensing

Prometaphase

Nuclear membreane breakdown.

Spindles attach to kinetochores at the Chromatids

Metaphase

Alignment of sister

• Astral mictrotubules
• Kinetochore microtubules
• Interpolar microtubules

Anaphase

Synchronous separation of chromatids

Telophase

Reforming nuclear membranes among the two sets of chromatids.

Cytokinesis

The Cytoplasm divides in two by contractile ring.